Stereoscopes



Feb. 7, 1956 R. D. CRANDALL STEREOSCOPES Filed May 29, 1953 u ,w .a .W m PN mm w ,m l O I m MJ@ f. 5 n d m f A) zo. A. R t n :1:2:

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sTEREosCoPEs f Roland Dimon Crandall, Old Greenwich, Conn.

Application May 29, 1953, lSel'ritl VNWO. 358,275

4 ClmS. (CL-88H29) This invention relates to stereoscopes 'and has for its object the provision of a `'device of the character mentioned which is capable of'so `functioning as to attain pronouncedly highlysatis'fa'ctory optical results ldespite the fact that it is so constructed that it may be. commercially lobject as will result in `a vclearly delined -image in relief.

Other objects and advantages of the invention will become apparent from the following description when considered in connection with the accompanying drawings,inwhichf Figure 1 is a perspective'view, illustrating "the present stercoscope in the `hands `of 'a user,

Fig. 2 is a horizontal central sectional view lof the stereoscope and illustrating it by full and 'dotted lines respectively in two of its various positions of adjustment,

Fig. 3 isla rear vieweof th'e stereoscopeand illustrating the manner in which the eye-piece of Aeach of the two optic'systems 'rnas'ked for the-purpose hereinafter more particularly mentioned. f

Fig. 4 isa perspective view illustrating 'a container,

"in which the "pair of optic systen1s bestrshown `in`^Fig. 2,

maybe included along'with `aprdduct soldYonthe market in packaged form, `the container lvbeing provided with score lines so that it may be readily conditioned to 4receive the two optic systems as shown in Fig. 2, and

Y Fig. 5 visv apperspective view illustrating one of the optic systems of Fig. -2.

I'Referring to the drawings, ythe numeral 110 findicates a container of the cardboard type often femployed `in `the packaging of various commodities, `such as breakfast foods, -the -packagebeingrprovided' with score-.lines 11 which extend throughout three sides of the container in a transverse central relation to the same. The scorellines 11-enable the container tto'be separated transversely of itself 'except for Atheiront Wall `1'2 which, as `will be readily 'understood-from an inspection'of Figs. 4l and 2, remains intact at `all times. The rear wall 13 o`f the container is provided with score-lines 14 which enable that wall to be conveniently punched out so as to provide therein a pair of openings 15. Likewise, the container is provided in its front wall 12 with a pair of score lines 16 which enable portions of thatwall to be conveniently punched out so as to there provide a pair of openings 17, which are somewhat larger than the openings and are spaced from each other to a substantially greater extent than the distance between the corresponding openings `15. The openings 17---17 are of such United States Patent@ F 2,733,635 y i'latented Feb. 7, 1956 size, with respect to the openings 15--15, Ithat they are adapted to receive the forward telescopic 'sleeves -or sections 18 of'a pair of `optic systems, 'the openings 15-1'5 being adapted to receive the rear ytelescopic sleeves or sections I9 of .said systems which are respectively indicated in their entirety by the numerals 20 and 21. l

Whenthe container "1?0`is employed `in .the packaging of a commodity, such as a breakfast cereal, `both of the optic systems 20--21 `are lincluded within the container and passed on to the consumer vpurchaser 'so as Vto enable him to assemblethe present stereoscope lin its form shown in Figs. 1 to 3 using the container, when-partially separated along the line 11`, to provide a pair ofhingedly connected sections 22-23, within which Ethe optic systems Ztl-21, respectively, are adapted 'tobe vassembled and 'there supported in operative relation to each other. When assembling the optic systems Ztl- 21 in relation to their associated retaining sections fr22-23, the telescopic sleeves 18--18 and 19-19 are introduced respectively through the openings 17-17 and r15--15 so that they assume, With-respect to each other, a Stelescopic relation, as shown in Fig. 2.

The respective optic systems 20 Land 21 include a "front lens 24 and a rear lens 25, the lens 241being suitably connected to an annular ring 26 which is `suitablyanchored to the inner wall ofthe section 18. Each of theflenses is suitably connected to an annular ring Z7, which is suitably anchored to the inner wall of its associated telescopic section 19. As will be un'd'erst'ood from aninspection of Figs. 2 and 3, each o'f'the lenses 25 carries iamask 28 which issemi-circular in contour, the masksbeing so rdisposed on the respective lensesfthat thefletthalf of the left lens appearing in Fig. 3 remains lexposed atV all time whereas the right half ofthe'riglit lens appearing :in Fig. 3 remains exposed at all'times. By experiment it has been found that these `masksZt and their relationshipto'each v other may be used to' adecided advantage, from VVan optical standpoint, when the fully assemb'led deviccisfzemlployed as a stereoscope.`

In `order that the person l'assembling the device may be guided in the assembling operations 'soithat the masks `28 will assume their respective verticalpositions shown in Fig. .3, the telescopic sectionsV "19 areprovided with longitudinally extending indexing marks v30 which are adapted to register with .the vertically disposed indexing lines 31 provided on the rear iface' fof the containerfvllib as shown in Figs. 3 and 4. As a further guide litothe person assembling the device, the Asections 18` and 159 are provided with 'transverse graduations lor indexing lines 32 which enablefhim to vvdetermine towhat extent, as between limits, Vthe telescopic sections should be moved Iin order that the two Yoptic systems. 20 and 2:1 may occupy proper positions within'the assembly, it tbeing noted in this connection 'that the transverse graduations 32 are to 'De Iconsidered inconjun'ction `with the plane of the front and rearwalls` of the sections 22 and 23 which respectively serve to support 'the optic systems in their 'operative positions.

Taking into account "the relationship Vof the openings 17 and 15 to the sections .18arid119, it'will be understood that once saidfs'ectionsfareiproperly:adjusted lengthwise of themselves rin 'order -to .obtain proper focusing, such units 'are frictionally held @against fundue displacement with respect to the retaining sections 22--23, although if it becomes desirable from time to time to longitudinally adjust one or the other of the telescopic sections 18-19, such adjustment may be readily effected despite the frictional gripping action that exists as between the walls 12--13 and the respective sections 18--19.

Inasrnuch as the container 10 is adapted to be separated along its transverse score line 11, thus leaving the A front wall 12 of the structure intact, it follows that the retaining sections 22-23 which support the optic systems 20-21 may be moved from their full-line positions, shown in `Fig. 2, to their dotted line position shown therein, orto any intermediate position that may become necessary in order to so condition the device, from an optic standpoint, that the user will obtain the best optical effect when the device is employed as a stereoscope. Y

The stereoscope herein illustrated as embodying the present invention, despite its simplicity and relatively low cost of manufacture, has been found to attain pronouncedly highly satisfactory optical results and has proved itself capable of being readily adjusted, even by children, employing it in the viewing of subjects in duplicate as when they gather in a semi-,circular group about the duplicated subject.

Needless to say, the device may be employed in obtaining the desired effect, such as may be attained by placing a single picture in a vertical position and arranging a vertically disposed mirror immediately in front of one of the side margins at right angles to the plane of said picture, the picture and the mirror being thusly so related to each other that the image of the picture appears in the mirror as though it were in the same plane as the planeY of the picture itself, in which case the picture andthe image are identical and when viewed through the present device, will effect a stereoscopic phenomena.

In addition to the-device being capable of highly satisfactory use in connection with still subjects in duplicate, it may be employed to advantage by one or more persons seated in front of the screen of a television receiver on which is made to appear, for example, a moving picture originating at the television transmitting station and characterized by the fact that the successive picture presentations are so duplicatedV that they may be employed as animated stereoscopic subjects. -Since the device embodying the present invention `may be employed in connection with a television presentation of a duplicated motion picture, as just described, it follows that the device may Valso be employed as a stereoscope for viewing such motion picture when projected directly uponY the usual type of motion picture screen from the usual type of motion picture projector.

Although only one form of the invention is herein illustrated and described, it will be understood that various changes and modifications may be made with respect to that which is herein illustrated without departing from the spirit of the invention or the scope of the following claims.

I claim:

1. A binocular viewer comprising a pair of optic systems, a holder for said systems formed of a rectangular container of cardboard-like material, said container having a substantially central, torn, perforated line of separation through three Walls providinga pair of similar opposite supporting sections on opposite sides of said line, within which said systems are carried in spaced relation to each other, said container having a fourth, remaining continuous flexible front wall whereby said supporting sections are swingable relative to each other about an axis contained in said front wall, the said front wall and the rear walls of the container having pairs of punched-out aligned openings through which the optic systems respectively extend, thereby to enable said systems to be angularly adjusted with respect to each other.

2. A binocular viewer comprising a pair of optic systems, a holder for said systems formed of a rectangular container of cardboard-like material, said container having a substantially central, torn, perforated line of separation through three walls providing a pair of similar opposite supporting sections on opposite sides of said line, within which said systems are carried in spaced relation to each other, said container having a fourth, remaining continuous flexible front wall whereby said supporting sections are swingable relative to each other about an axis contained in said front wall, the said front wall and the rear walls of the container having pairs of punched-out aligned openings through which the optic' systems respectively extend, thereby to enable said systems to be angularly adjusted with respect to each other, l

Vsaid supporting sections being so proportioned as to resemble cubes.

3. A binocular viewer comprising a pair of optic systems, a holder for said systems formed of a rectangular container of cardboard-like material, said container having a substantially central, torn, perforated line of separation through three walls providing a pair of similar opposite supporting sections on opposite sides of said line, within which said systems are carried in spaced relation to each other, said container having a fourth, remaining continuous flexible front wall whereby said supporting sections are swingable relative to each other about an axis contained in said front wall, the said front wall and the rear walls of the container having pairs of punched-out aligned openings through which the optic systems respectively extend, thereby to enable said systems to be angularly adjusted with respect to each other, the said openings in the front and rear Walls having torn, perforated edges displaced laterally of said walls by said optic systems.

4. A binocular viewer comprising a pair of optic systems each`having a rear lens, a mask covering only a portion of each of said rear lenses, a holder for said systems formed of a rectangular container of cardboardlike material, said container having a substantially central, torn, perforated line of separation through three walls providing a pair of similar opposite supporting sections on opposite sides of said line, within which said systems are carriedin spaced relation to each other, said container having a fourth, remaining continuous tiexible front wall whereby said supporting sections are swingable relative to each other about an axis contained in said front wall, the said front wall and the rear walls of the container having pairs of punched-out aligned openings through which the optic systems respectively extend, thereby to enable said systems to be angularly adjusted with respect to eachother.

References Cited in the file of this patent UNITED STATES PATENTS Great Britain Mar. 3, 

